I laugh at you - only because I know you and can picture a giant being attacked by flies.
Been there / done that. One reason I wear long pants on the water , no matter how hot it gets outside.
Some of those biting flies will take a tiny piece of meat from your body.
The better repellant has DEET in it - even then some will bite you.
My guess - wind carried the flies out to the ship and then you came along ringing dinner bell to them.
FWIW: I carry three fly swatters in cabin.
What could be more mundane than dying of old age or of natural causes when there is death by misadventure to be pursued ? Skip